The Caverns of Glass

Publisher's blurb: The Caverns of Glass is a short, old school style adventure for 4 4-6th level characters set in mysterious caverns, deep in the heart of a mountain once used by a powerful wizard for dark, magical experiments. The adventure is brief and intended for experienced DMs to use within their existing campaigns as a side trek or specific, short adventure so has been written in an open style to allow for easy adaptation.